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In recent years, graphene oxide has been the subject of study due to its electronic, magnetic, thermal and mechanical properties. This study presents two different methods of chemical functionalization to obtain graphene oxides (GO) adhered to a high-density pyrolytic graphite (HOPG) surface by acid spray coating. For the spraying in the first method, two strong acids (H2SO4 and HNO3) were used. In the second spray method, three strong acids (H2SO4 / HNO3 / HCl) were used. For both cases, the spray interval was 2, 4 and 6 hours. HOPG plates were characterized by SEM-EDS, FTIR, Raman. The presence of graphene oxide on the surface of the plate could be determined. This method demonstrates the ability to functionalize the surface of (HOPG), breaking its sp2 structure and forming defects where the characteristic functional groups of GO are found.

Ruben Jesus Camargo Amado, Universidad del Valle

Director Escuela de Ingeniería Química

1.
Camargo Amado RJ, Sevilla-Abarca ME. Chemical functionalization method to obtain graphene oxide adhered to the surface of high-density pyrolytic graphite plates by acid spray coating. inycomp [Internet]. 2021 May 18 [cited 2024 Oct. 15];23(2):e21010838. Available from: https://revistaingenieria.univalle.edu.co/index.php/ingenieria_y_competitividad/article/view/10838

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Received 2020-12-07
Accepted 2021-03-20
Published 2021-05-18